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Pelican · Hardware & Fasteners
15977TFM
In stock · ships from Knoxville
This is a 4-inch Teflon square-cut bonnet gasket used in quick release bonnet (QRB) valves on chemical tank trailers, fuel tankers, and similar bulk liquid transport equipment.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 2 applications
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All confirmed applications for this part number.
Other applications
Other applications
Fits 4-inch QRB-style valves typically found on tank trucks and chemical trailers. Verify your valve’s bonnet size and manufacturer before ordering—QRB gasket designs can vary between valve brands.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
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It seals the bonnet assembly to the valve body, preventing leakage while allowing fast access for cleaning and maintenance. Replace when you notice weeping around the bonnet, or as part of routine valve service, to maintain a reliable chemical-resistant seal.
Part Number: 15977TFM
TOP HEAD GASKET (QRB) 4
Unit: ea
Dealer: Post Onsite
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